值域范围可能有所不同，就是rand()的范围
by wangyiyu @ 2023-01-05 19:30:26
感谢楼主
by 2019zll @ 2023-01-05 19:36:52
@[2019zll](/user/297895) orz您太强了
by wangyiyu @ 2023-01-05 19:44:33
%%%%%%%
by _WRYYY_ @ 2023-09-20 21:36:46